Featuring 101 giant Sudoku 25x25 puzzles, sorted into order of increasing difficulty and printed on large, top-quality paper, this unique collection of puzzles is full of attractively-designed challenges from best-selling puzzle author Gareth Moore, author of many international books. Each puzzle can be solved by nothing more complex than simply scanning the 25 rows, 25 columns and 25 5x5 boxes, without having to make any pencil mark notes. Guessing is never needed, and there is a guaranteed unique solution. Visit www.PuzzleBooks.org for a full list of other titles in this series.